Baseless Doubt

I just had an argument with my girlfriend about the correct time; it was the microwave clock v. the oven clock v. my phone clock v. her iphone clock. I sided with the oven which I've always trusted to be correct, and was quickly beaten down by the one argument that trumps all others with respect to arguments about time:

Her phone was connected to satellites.

Nevermind that neither of us have any real conception of how this connection takes place (something about radiowaves and space... signals). The mysteriousness and awesomeness of the concept, some sort of hive-mind of space-computers revolving around the earth at huge speeds, is enough to give her argument the win.

But I mean, there really isn't much argument here, when you think about it; why should it be that whatever time is sent from these satellites is the one true time that we hold to be the standard against which all other clocks are set. Ultimately the ones responsible for setting this satellites time are the service providers? or is it apple? Who the hell owns these satellites anyways?

I guess the fact that satellites are so high-tech, even though they've been around now for half a century just proves that they must be in tandem with some insanely high-tech timing device. I'm thinking one of those clocks that measures radioactive decay, with like a million significant figures. Really, though, there's no firm basis for this reasoning.

Which brings me to the final point of my girlfriend's argument: if we don't trust the satellites, then who do we trust? It's not as if there's some more sophisticated clock in the oven, or microwave. At least with this satellite time it will be more universal, assuming it will tell that time to whoever is connect to that service provider/has an iphone. And in the end that's only way you can measure time, since it's all relative anyways. Even if there were some super sophisticated clock that told us the time from the beginning of the universe and said it was 12:53, it wouldn't hold any water if everyone was connected to satellites telling them that it was 12:55.

But, even so, I can't just give her the win in the argument. Not when there's still doubt about these satellites. It may be baseless doubt, but I'm going to hold on to it for the sake of the truth!.... and winning dumb arguments.